Engine control.



H. HERTZBBRG & M. J. WOHL.

ENGINE CONTROL.

APPLIoATxoN FILED DBO. 2, 1909.

`1,006,75 1 Patented ocr.. 24, 1911.

JWM

A TTDBIVEY ported.

UNITED STATES PATENT OFFICE.

HARRY HERTZBERG AND MAURIQE J. WoHL. 0F NEW YORK, N. Assia-Nens To ABBOT A. Low. 0F HonsEsHoE, NEW YoBK.

\ ENGINE CONTROL.

Specification of Letters Patent.

Patented Oct. 24, 1 911.

Application filed December 2. 1509. Serial No. '530,897.

To all whom 'it may concern:

BeI it known that I. Hanni' Hna'rznno and Mannion J. lVonL, citizens of the United States, and residents of -thc city of New York, countyA of Kings, and State of New York. have invented certain new and useful Improvements in llngine Control, of which the following is a specification.

This invention relates to engine governing meehanism, particularly to means for governing internal combustion engines, though the invention muy he applied to other types ot engine. i

The object of the improvcments.l is to render the governing positive and efficient.

Generally speaking, the invcntiton consists in the combination of a variable valve, changes in the degree of opening of which vary the speed of the en ine, as, for example, the intake valve o a reciprocating internal combustion engine; a reversible electric motor for increasing and diminishinol the degree ot' opening of this` valve, and a centrifugal governor controlling the reversing ofthe motor. 't

(')ne of the possil'ilc emhotipients of the .invention is disclosed in thclccsnnpanying il'aayiligs, wherein Figure t 1s a ,semi-diagrammatic View.

showing a reciprocating internal @omini-mon engine :in elevation andpartly in section, and the centrifugal goijernor and switch in plan; Fig. 2 is avplan view of the centrifugal ,f govrrnor` switch,nnd stationaryicontacts.

` Referring now to these views, tlieninneral 1 indicates an. internal combustion engine of the reciprocating kind, 2a dynamo driven by the engine', and amotor driven ln the dynamo. The intake valve is indicated hy the numeral 4; this valve being opened hy' a cam 5,through a push-rod 6 and u, rocker 7.

, The degree of opening,r of the valve is regulated by the motor 3, through worm gearing 8, which turns lnn eccentrically journaled pivot 9, on which hitter the rocker 7 is suplt. will be understood that, when the motor runs in one direction, thopivot t) is turned so as to he lowered, whereby greater opening of the valve results, hat when the motor runs in the opposite direction, the pivot; t) is turned oppas-italy, so as to he. raised., whereby a lessened opening ol' the valve is obtained. This particular contacts 18 and 19, suitably insulated, which are connected by wires 20, 21 with the motor brushes. The switch contacts are adapted to rest against either pair of stationary oontacts, or, in miti-position, to touch neither pai of stationary contacts. A spring 22 tcm s to hold the switch 17 lwith its contacts agailtst contacts 13 and 14, with which arranpmnent the motor 3 runs to produce ngraximnm 'opening of the valve l. Obrimisly. however, any other suitable means may he employed to tend` to throw the switch in one direction, as the weightl of the switch itself. The switch 17 is thrown aiii--t--lrt'opposite direction hy a novel form of centrifugal `governor 2f the same. comprising a ringQ-l, encircling and spaced from a shaft 23 driven from the engine.; the Said ring` livingr pivoted to the shaft at 2G. The Iringr 2- is connected with a slidahlc collar 2T hy means of a pivotal link 28; and the collar throws un intermediatcly pivot'ed lever 2t). spring 30 connected to lover 29 serves to tend to canse the 'rino` Q4 to assume. and mai aina position diagonal to 4Vthe shaft. ,25 l5 ald the tension of the aprirner may he varied hyy an adjusting device such as B1. When the rotation of the` shaft. 25 has caused the rinor 14 to assume n position more nearly |nrpendicnlar to the shaft, the lever 2E) hears against the switch lover 17, and throws thi` salue. lirst to neutral, and then against. the contacts 15 and lt. The contact of ,the lever 2!) against Vthe lever 17 may hr. timed hy a 'suitable adjusting device, as 32.

Resilient cushioning means are provided in connection with the electrical contacts. lroferahly they are associated with the stationary contacts` 13 and 14, and 15 and 16. These contacts are shown as mounted slidably in supporting bars- 33, with s rings 134- intcrposed between them andr sai bars. {wnitable adjustable: devices, as nuts 35 on the stems of said contacts, limit the extent to which the contacts may be protruded under the influence of the springs.

lil/'hat is claimed as new is:

1. A valve controlling mechanism for reciprocating engine valves, comprising in combination, an engine, an engine valve, eccentrically mounted means for actuatin said valve, a se mental rack on the axis-o said eccentrica] y mounted means, a motor for varying the position of Said eccentrically mounted means, a Worm actuated by said motor and mcshn with said rack, the action being such that irward movement of the motor swings said eecentrically mounted means to increase the stroke of the valve and reverse movement of the motor swings said means to shorten the stroke of the valve, oppositely dis nosed contacts, a switch bar adapted to osciilate between said contacts, means governed by the speed of the engine for oscillating the switch-bar from one set of contacts to the other to reverse said motor, and means for adjusting the periods of contact het-Ween said switch-bar and said speed governed means to vary the limits of s eeds at which the stroke of the valve will e changed.

2. A valve controlling mechanism for reciprocating engine valves, comprising in combination, an engine, an engine valve, means for actuating said valve, an eccentric support for said valve actuating means, a segmental rack rotatable on the axis of said eccentric suppo'rt, a motor for varying the osition of said valve actuating mechanism or regulating the stroke of the valve, a worm actuate by said motor and meshing with said rack, a switch for controlling the direction of said motor, means governed by the speed of the engine for actuating said switch to reverse said motor,and means mounted to adjust the periods of contact between said speed governed means and said switch to vary the limits of speeds at which the stroke of the valve will be changed.

Signed at Brooklyn, N. Y. city, in the county of Kings and State of New York, this 12th day of November, 1909.

HARRY HERTZBERG. MAURICE J. WOHL.

Witnesses:

A. LAURENT, Y JN0. A. SLAGLE. 

